Honestly, while the controversy is incredibly stupid, it's not something to get worked up about. Not good for your heart 😜
You don't have to relabel anything, just keep using old names for old stuff and maybe consider switching to main for your next GitHub project? It's honestly not that big of a deal.
That's why I said to not rename existing stuff, but to consider changing default names for new things. Or don't. It's not the end of the world.